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m68k reloc types

Roman Zippel zippel@linux-m68k.org
Mon Aug 16 22:21:00 GMT 2004 
Hi,

On Mon, 16 Aug 2004, Andreas Schwab wrote:

> > Which PIC modifier? It actually seems to work without one.
> > So it seems "lea _GLOBAL_OFFSET_TABLE_(%pc),%a5" should work as well, 
> 
> No, it does not create a GOT.

Any got access creates the got and the load should only be created if 
there are other got accesses.

> > Ok, glibc did just answer me that question, it uses it in the startup 
> > code. Does that mean we could get rid of the separate pic register as soon 
> > as gcc knows about pc relative addressing?
> 
> 32-bit pc-relative addressing is less efficient than 16-bit pic-register
> relative addressing, both in code size and run time.

What do you mean? -fPIC creates 32bit offsets and otherwise it makes no 
difference whether an address register or the pc register is used as base 
register.

bye, Roman
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